Corghi ET77 Betriebsanleitung Seite 73

assumed as reference (Fig. 17a). In ALU 2P the reference is the edge of the rim, given
that the inside weight is of the traditional spring type (Fig. 13).
Make absolutely certain that the end of the sensor is positioned in an area free of
discontinuity, so that the weight can be applied in the same position.
- Keep the arm in position. After two seconds the machine will give a beep to confirm
that the distance value has been acquired.
- Bring the end of the automatic sensor arm onto the plane chosen for application of
the outside weight (fig. 17b), as already described for the inside of the rim.
- Keep the arm in position and wait for the beep of confirmation.
If the measuring arm is returned to the rest position after acquisition of the data for
one plane only, or if the data of the outside plane have been acquired before those
of the inside plane, the message "Err 23" appears and the data entered are ignored.
- The machine now presets for input of the nominal diameter of the wheel.
- Modify the diameter value displayed by pressing the
number required. The diameter can be set in millimetres or the values already set
can be converted from inches to millimetres by pressing the
The keys can be kept pressed for rapid increase or decrease of the values
set earlier.
- When acquisition of the wheel data is complete, press
- Execute a new spin cycle.
Attaching balancing weights (ALU P, fig.18)
- Select the plane where the first balancing weight is to be applied.
- Rotate the wheel until the central element of the corresponding position indicator is
illuminated.
If the balancing weight is of the traditional clip type (inside plane in ALU 2P), position
the balancing weight at 12 o'clock. If, on the other hand, the weight is of the adhesive
type:
- position it inside the cavity in the weight holder end of the measuring arm (A, fig.
18), with the backing paper of the adhesive strip facing up. Then remove the backing
paper.
- Move the sensor until it is in the position indicated. In this phase, one display
continues to show the imbalance value of the side to be balanced, while the other
shows a numerical value updated on the basis of the sensor position, which becomes
zero when the position for application of the weight is reached.
- Rotate the end of the sensor until the weight adhesive strip is in position in
correspondence with the rim surface.
- Press the push button (C, fig. 18) to eject the weight and make it stick to the rim.
- Return the sensor to the rest position.
- Repeat this process for the application of the second balancing weight.
- Carry out a test spin to check the accuracy of the balancing.
In order to be sure that the weight sticks to the rim the surface must be perfectly clean.
ET 77 operator's manual
keys and set the
key.
.
GB
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